Hydropneumatic accumulators
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HY DRO PN EU M AT IC A CCUMULATORS DIAPHRAGM BLADDER BLADDER-DIAPHRAGM PISTON

Contents Operating principle, functions and characteristics. 4 ACS(L) Welded accumulators. . . . . . . . . . . . . . . . . . . 6 Technical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Dimensions and characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Order code system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Hydraulic connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Gas connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10...

▪ Nitrogen capacities from 0.7 to 4 litres ▪ Maximum pressure 330 bar depending on model ▪ Low temperature version: -40°C to +100°C depending on model AS ▪ Nitrogen capacities from 0.02 to 10 litres ▪ Maximum pressure 400 bar depending on model ▪ Extreme operating temperatures: -20°C to +120°C ACS(L) series The LEDUC hydropneumatic accumulators range ▪ Nitrogen capacities from 4 to 50 litres ▪ Maximum pressure 330 bar depending on model ▪ Extreme operating temperatures: -20°C to +100°C ABVE series ▪ Nitrogen capacities from 0.16 to 4 litres ▪ Maximum pressure 350 bar depending on model ▪...

Operating principle, functions and characteristics OPERATING PRINCIPLE If the very low compressibility of fluids makes it difficult to store their energy in small volumes, it does, however, enable them to transfer a significant force. Gas on the other hand is highly compressible, and can therefore store considerable amounts of energy in small volumes. The hydropneumatic accumulator makes use of these two properties. A hydro-pneumatic accumulator is a vessel which, in hydraulic circuits, is capable of storing a large amount of energy in a small volume.  The hydropneumatic accumulator is a...

Operating principle, functions and characteristics ► Pulsation dampening Adding a LEDUC accumulator to a hydraulic circuit smooths out any flow irregularities from the pumps. This leads to better operation of the system, protection of the components and thus increased service life, and reduced noise levels. Example: dosing pumps. ► Transfer of fluid The LEDUC accumulator makes it possible to transfer hydraulic pressure between two incompatible fluids, via the diaphragm which separates the two fluids. Examples: transfer between hydraulic fluid and sea water, test bench, etc. ► Energy storage...

ACS(L) Welded cylindrical accumulators The ACS(L) type welded accumulators are made up of a shell in high resistance steel containing a fluid-gas separator called a bladderdiaphragm. This bladder-diaphragm is made of nitrile for the standard range, and of hydrogenated nitrile for low temperature applications. The bladder-diaphragm is fitted with an anti-extrusion stud, thus allowing rapid and total discharge of the accumulator. ► Advantages Low temperature versions suitable for operation at temperatures down to -40°C (only for ACS series) Completely modular from 0.7 to 4 litres. This design...

Tornillo de hichado o válvula de hinchado Charging screw or valve Anti-extrusion stud Tope anti-extrusión B Ø 37 (ACSL) Ø 56 (ACS) Anti-extrusion stud Anti-extrusion stud B B Ø 1.45 (37) (ACSL) Ø 37 (ACSL) Ø 2.20 (56) (ACS) Ø 56 (ACS) CHARACTERISTICS AND DIMENSIONS Volume (L) ACS(L) series Charging screw or valve Charging screw or valve

ACS(L) Order code system To obtain the code of your welded cylindrical accumulator ACS(L), complete the different parameters from 01 to 07 in the table on the left according to the options you require (see table below). Fluid side connections Male M33x1.5 - Female G1/2’’ Gas side connections Charging screw M28 x 1.5 P1620 valve (M16x200) SCHRADER valve (8V1)

ACS(L) Fluid connections without fitting without fitting ACS(L) series

► Gas side connections - Code ► Gas side options - Code

ACS(L) Accessories Stainless steel Zinc-plated steel quick-tightening Code LEDUC ► ACS(L) adjustable clamps Série ACS(L) ► ACS(L) fixed clamp Zinc-plated steel Tightening torque of the fixation screws: 20 Nm. Code LEDUC Zinc-plated steel Stainless steel Tightening torque of the fixation screws: 20 Nm.

► Technical description LEDUC spherical accumulators consist of two hemispherical shells which are screwed together and which hold a diaphragm. This diaphragm has a metal stud which closes off the operation hole when the fluid is completely discharged. There is therefore no danger of damage to the diaphragm. The gas side port is fitted with a charging valve allowing the pressure in the accumulator to be checked or changed. Separator: Standard, Nitrile: from -20°C to +100°C Other diaphragms are available on request. Maximum pressure : 400 bar (except for AS 0.7 L) Extreme operating...

CHARACTERISTICS AND DIMENSIONS Charging valve Nitrogen capacity Vo (litres) Charging valve Nitrogen capacity Vo (litres) Anti-extrusion stud

To obtain the code of your AS or AC accumulator, complete the different parameters from 01 to 06 in the table on the left according to the options you require (see table below). Spherical accumulator Compact accumulator Without protection ARCOR® treatment NBR with stainless steel stud Diaphragm material NBR NBR with adherized metal stud Charging valve P1620 valve (M16x200) P1620 stainless steel valve (M16x200)

Stainless steel Zinc-plated steel quick tightening Code LEDUC Code LEDUC

ABVE Bladder accumulators ► Technical description The ABVE bottle type acccumulators consist of: a forged steel body a bladder a charging valve an oil side orifice fitted with a poppet valve which prevents extrusion of the bladder, and an air bleed screw used during system start-up. ► Advantages Bladder accumulator component parts are interchangeable with those of major accumulators available. Dimensions allow for easy installation and also use in batteries. ABVE 330 bar Maximum pressure : 330 bar ABVE 4 maximum pressure : 350 bar Extreme operating temperatures : Standard version : -20°C to...